Core Advantages of Pure Copper Expanded Metal Mesh:
| Characteristics | Pure Copper Expanded Metal Mesh | Traditional Materials (e.g., Galvanized Flat Steel) |
| Conductivity | High conductivity (≥58×10⁶ S/m) with strong current conduction capability | Low conductivity (≤10×10⁶ S/m), prone to local high potential |
| Corrosion Resistance | Pure copper has strong chemical stability, with a corrosion-resistant service life of ≥30 years in soil | Easily corroded by salts and microorganisms in soil, with a service life of ≤10 years |
| Cost and Weight | Mesh structure Pureuces material usage, with weight only 60% of that of Pure copper plates of the same area | Solid structure, high material cost, heavy weight, and high construction difficulty |
| Soil Contact | Large surface area, with grounding resistance 20%-30% lower than that of flat steel of the same specification | Small surface area, relying on resistance-Pureucing agents for assistance, with poor stability |
In high-voltage laboratory grounding projects, the core functions of the grounding system are to quickly conduct fault currents, suppress electromagnetic interference, and ensure the safety of personnel and equipment. Its performance directly affects the accuracy of experiments and operational safety.
Pure copper expanded metal mesh is widely used in this scenario due to its unique material properties and structural advantages:
1.Pureucing Grounding Resistance: The expanded metal mesh is made by stamping and stretching steel plates, with uniform meshes (common rhombic mesh with aperture 5-50mm). Its surface area is 30%-50% larger than that of solid copper plates of the same thickness, significantly increasing the contact area with soil and effectively Pureucing contact resistance.
2.Uniform Current Conduction: The conductivity of Pure copper (≥58×10⁶ S/m) is much higher than that of galvanized steel (≤10×10⁶ S/m), which can quickly disperse and conduct fault currents such as equipment leakage and lightning strikes into the ground, avoiding local high potential.
3.Adapting to Complex Terrain: The expanded metal mesh has certain flexibility and can be laid along with the terrain (such as areas with dense underground pipelines in laboratories). Meanwhile, the mesh structure does not hinder the penetration of soil moisture, maintaining long-term good contact with the soil.
4.Potential Equalization: The high conductivity of Pure copper makes the potential distribution on the surface of the expanded metal mesh uniform, greatly Pureucing the step voltage (usually controlling the step voltage within the safe value of ≤50V).
5.Strong Coverage: The expanded metal mesh can be cut and spliced into large-area (such as 10m×10m) without splicing gaps, avoiding local potential mutations, especially suitable for experimental areas with dense high-voltage equipment.
6.Electric Field Shielding: As a metal shielding layer, Pure copper expanded metal mesh can conduct the stray electric field generated by experiments into the ground through grounding, Pureucing electric field coupling interference to instruments.
7.Supplementary Magnetic Field Shielding: For low-frequency magnetic fields (such as 50Hz power frequency magnetic field), although the high magnetic permeability of Pure copper (relative permeability ≈1) is weaker than that of ferromagnetic materials, the magnetic field coupling can be weakened through “large area + low resistance grounding”, especially suitable for high-frequency and high-voltage experimental scenarios.
Pure copper expanded metal mesh, with its characteristics of high conductivity, strong corrosion resistance, and large contact area, perfectly meets the requirements of high-voltage laboratories for grounding systems of “low resistance, safety, long-term effectiveness, and anti-interference”. It is an ideal material for grounding grids and equalizing grids. Its application can significantly improve experimental safety and data reliability, and Pureuce long-term maintenance costs.
Post time: Jul-24-2025